Nieces are wonderful because they are as close to being your own children as you can get without actually being your children! You have a best friend, shopping cohort, and a mini partner-in-crime. You can spoil them rotten and send them home to their parents. You don’t have to deal with the tantrums. You get the good without the bad!

Birthdays are the perfect day to let your niece know how much you love and appreciate them. Finding the perfect greeting can make a good greeting a memorable and spectacular greeting! Here are some greetings for nieces of all ages that are guaranteed to put a smile on their faces and make their day! If you make them feel like a million bucks, they are sure to remember the day their mom gave birth to them and how you made them feel!

Funny Birthday Wishes for an Adult Niece

A niece is someone as beautiful, talented, and intelligent as her favorite aunt—me of course! Happy Birthday to my amazing niece!

Statistics show that nieces are way better than nephews! I’m so glad we got the better end of the bargain! Best wishes, niece!

You are beauty, brains, and a real humdinger! Love from your favorite ‘fun’ uncle!

The fire department is on standby and the fire extinguisher is under the table! Time to blow out the candles on your cake! Happy Birthday to my beautiful niece!

How can someone be as pretty and intelligent as you? Oh I forgot. It’s on our genes. Best wishes, niece!

Is it your birthday AGAIN? Stop getting older! You’re starting to catch up to me! Happy Birthday to my beautiful niece! Another year older and another year wiser!

Happy Anniversary of your 29th Birthday my beautiful niece! You’ve grown into such a lovely, elegant woman! May God Bless you with a lifetime of happiness and love!

I have a particular set of skills. Skills that make me a nightmare for people like you. I don’t know where you live and I don’t know who you are but I will find you… and wish you a joyful birthday, niece.

Happy birthday to my beautiful niece. I wish you love.

I’m sending you birthday wishes and kisses! You are one incredible, beautiful girl! You are fabulous—it takes one to know one, right?!

Happy Birthday to the girl who has the only birthday I can remember without being notified by Facebook!

Many happy returns! I was going to try and wrap up Ryan Gosling but he just wouldn’t stand still long enough to fit in the box! I hope your birthday is still a pretty incredible affair!

Best Wishes to a wonderful girl with the most amazing aunt in the world! You sure are one lucky girl! I hope your birthday is as wonderful as we are!

You’re almost as beautiful in your super filtered selfies as you are in real life!

Happy Birthday to one lucky girl! You are so lucky to have me as your aunt! I’m also pretty lucky to have you as my niece!

Out of all the nieces in the world, I think you pretty much take the cake! You’re the world’s greatest niece! Happy Birthday to my little firecracker!

There’s a statistic out there that proves that awesome nieces have really, really awesome aunts! Happy Birthday from your awesome aunt!

Fun and fab! Those are the two words I would choose to describe you, my favorite niece! Best wishes to you as we celebrate the day you were born.

Sweet Birthday Wishes for an Adult Niece

I wish the Happiest of Happy Birthdays to someone fantastic and practically perfect in every way! You are one-in-a-million!

Forget the past. Don’t fret about the future. Live in the present and enjoy the little things. My warmest wishes, my beautiful niece! I wish you a lifetime of happiness, laughter, and love!

Roses are red. Violets are blue. Sugar is sweet… but not as sweet as you! Happy Birthday my sweet niece! Love from your favorite Aunt.

I might be your Aunt but I would also like to think of myself as your friend. Best wishes to you on your special day.

It’s time to blow out your candles and make some wishes! It’s time to get this party started! Love to you, my favorite niece!

I wish you plenty of laughter, love, and cake today! I hope this next year grants you every dream and wish you can think of!

You are so beautiful, brainy, and a better dancer than me! Now let’s get our groove on as we celebrate another year you’ve survived.

I’m sorry to tell you that I ate all your cake and devoured your ice cream. I hope you’re still glad you invited me, my niece!

Your birthday it is. Happy it will be. Best Wishes from the greatest Jedi that ever lived, Master Yoda.

Happy Birthday to my beloved niece.

Sweet Birthday Greetings for a Young Niece

Happy Birthday to my beautiful niece! You have and continue to make me one very proud aunt! May all your wishes and dreams come true this year!

No matter how old you are just remember that I will always be here for you. You can always come to me for hugs, movie dates, or late night gossip sessions! That’s what Aunts are for! Happy Birthday to my remarkably brilliant niece.

Nieces, poodles, warm apple strudel—these are a few of my favorite things!

You are more beautiful than a rainbow on a rainy day and more vibrant than a sunflower, Happy Birthday to someone who deserves the world.

For every wonderful niece there’s a wonderful aunt! May you have the happiest of birthdays and the best year yet!

I think instead of calling me ‘Uncle’ you should call me ‘Funcle’… as in the ‘fun uncle’. What do ya say?! Love from Funcle!

Happy Birthday, make a wish.

You are the most wonderful niece and I am so grateful to be able to watch you grow up into such a beautiful, intelligent, talented young lady!

You are brighter than any star in the sky, smarter than any book, and funnier than any comedian. I am so grateful to be able to call you my niece! Happy Birthday, wonderful girl! May you make some beautiful memories today.

You are the sweetest child I’ve ever met and I’m so glad I get to call you my niece! Best Wishes to you on your special day!

You are one-in-a-million and I couldn’t be more excited for a day full of cake and ice cream! It’s a bonus that it’s your birthday too! My best wishes, niece!

Happy Birthday to you! Happy Birthday to you! You look like a monkey and you belong in a zoo! May your birthday be as wild and crazy as you! Love the monkey’s uncle!

May you have a supercalifragalistic birthday and an expealidocious year! You’re an amazing girl and an even more wonderful niece! You are as beautiful on the inside as you are on the outside!

You have amazing genes and I would know because we’re related! Happy Birthday to my gorgeous, genetically blessed niece!

You are loved to the moon and back by your Aunt and Uncle! The stars are shining bright on your birthday tonight! Wishing you the best, our beautiful niece!

Who is the awesomest niece around?! You are! Happy Birthday to my awesome-sauce niece!

Sentimental Birthday Messages for your Niece

I am so glad that you are my niece and my friend. Happy Birthday, sweetie! May you have a wonderful day full of smiles and laughs, surrounded by your friends and family!

Best wishes to you on your birthday. I’m sending a smile and a great big hug to my favorite niece!

You are beautiful inside and out. You have the biggest, most caring heart. You are smarter than anyone I know! I’m so blessed to be able to call you my niece!

God blessed me tremendously when he made you my niece! I am so proud of the young lady you have become! I hope you have the most wonderful birthday and a year of many amazing things!

Best wishes to someone so sweet she makes my teeth hurt! Happy Birthday from your very cheesy favorite aunt!

I’m sending positive energy your way to help you celebrate your big day! May you have the hap-hap-happiest birthday in the history of birthdays!

My niece, I hope your birthday is spectacular and you have the greatest day! You are one-in-a-million and I couldn’t ask for a better niece!

Happy Birthday, my dear! You are truly a very special girl! May your day be wonderful and your year be better than the last!

Happy Sweet 16th Birthday to my beautiful niece! There are no words to describe how proud I am of the young lady you have become! May you have a wonderful birthday surrounded by your family and friends.

It’s weird to think that you’re as old as you are! I can’t imagine driving with you on the road! I don’t think I can handle it. Best Wishes on your big day, my sweet niece! Love from your favorite aunt!

Your birthday only comes around once a year and your sweet 16th birthday only comes around once in a lifetime! Enjoy your day spent with your incredible friends and family. You are so blessed!

Just remember a 16-year old merlot is worth more than a 15-year old merlot! Happy 16th Birthday, my lovely niece!

You are 15 going on 16, what am I going to do? I’ll wish you the best, a very happy birthday and then grab some of that cake! Much love to you my very special niece.

Your Aunt is one amazing, incredible person, isn’t she? I guess you’re pretty okay too. You better be enjoying one heck of a good 16th birthday party! Don’t forget to save a piece of cake for your favorite aunt!

Best Wishes to you on your special day. Oh to be sixteen again. These next few years you will experience so much. It’s going to be a rollercoaster of emotions. Always remember that I will be here to listen anytime.

My best wishes! I hope your 21st birthday is a memorable—key there being memorable one, as in you’re able to remember with great clarity the events of the evening.

To our favorite niece! You have grown from the most adorable child to such a beautiful, intelligent young lady! Have a very happy… and safe 21st birthday!

Blessings to you on this very special day! You only turn 21 once! Make it one to remember–don’t tell your parents I said that! Warmest wishes, my favorite niece!

Happy Birthday, my sweet niece! It seems just like yesterday you were learning to talk and now you’re going to be learning to drink! Good lord time flies when you’re having fun! Have the happiest birthday!

I pray that this special day of yours ushers in the beginning of success, prosperity and happiness in your life. May the Lord pour his choicest blessings on your life. Have a blessed birthday.

Dear niece, as you celebrate the momentous occasion of your birthday, may God bless you beyond measure and give you the strength and courage to always pursue your dreams and aspirations in life. Many happy returns and have an awesome life.

Have a very special day, dear niece. I pray for your good health and good fortune in your everyday affairs. May you always have a reason to smile. Stay blessed and enjoy life!